Undercover agent Sascha Petrosevitch infiltrates a criminal gang led by the notorious criminal Nick Frazier to gather information about a large-scale operation. Following a dramatic shootout and chase, Sascha is seriously wounded but ultimately survives and continues his mission. The plot thickens when Sascha, now recovering, is incarcerated in the newly reopened Alcatraz prison. Unbeknownst to the authorities, the prison becomes the target of another gang seeking to extract a valuable secret from an inmate who is on death row.

The situation escalates when the gang invades the prison, taking the guards and inmates hostage in a high-stakes standoff. As the gang demands the hidden location of a massive cache of gold, Sascha must navigate this dangerous environment, working to undermine the criminals from within. Utilizing his skills and forming reluctant alliances with fellow inmates, Sascha fights to protect the illicit gold and ensure justice, even as multiple factions clash in the increasingly volatile prison environment.